p{
    margin: 0;
}
.wrap{
    position: relative;
    width:1200px;
    margin:0 auto;
}
.wf-item{
    position:absolute;
    background-color:#ededed;
    overflow: hidden;
    box-shadow: 1px 2px 3px #ccc;
    transition:box-show 2s;
    /* font-size:0;  尽量不使用*/
}
.wf-item:hover{
    box-shadow: 3px 5px 10px #ccc;
}
.wf-item img{
    display:block;
    width:100%;
    opacity: 0;
    transition: all  2.5s;
}
.wf-item .title-box{
    height:44px;
    text-align: center;
    line-height:44px;
    background-color:#fff;
    color: #000;
}